In vitro germination, callus induction and phenolic compounds contents from Pyrostegia venusta (Ker Gawl.) Miers

SummaryIt has been postulated that the high phenol and phenolic acids plasmatic levels found in patients with chronic renal failure are contributory factors in the abnormal platelet function described in these patients. This hypothesis was corroborated by “in vitro” studies showing the deleterious effect of these compounds on certain platelet function after pre-incubation of PRP with phenol and phenolic compounds. The present studies were conducted to determine the influence of phenolic compounds on platelet release reaction. It was found that phenol inhibited from 62.5 to 100% the effect of the aggregating agents thrombin, adrenaline and ADP on platelet 5-HT-14C release. The phenolic acids p-, m-, and o-HPAA inhibited from 36.35 to 94.8% adrenaline and ADP-induced platelet 5-HT-14C release. Adrenaline-induced platelet ADP release was inhibited from 27.45 to 38.10% by the phenolic compounds. These findings confirm the hypothesis that phenolic compounds interfere with platelet function through the inhibition of the release reaction.

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Phenolic Compounds Present in Medicinal Mushroom Extracts Generate Reactive Oxygen Species in Human Cells In Vitro

International Journal of Medicinal Mushrooms ◽

10.1615/intjmedmushr.v10.i1.20 ◽

2008 ◽

Vol 10 (1) ◽

pp. 1-13 ◽

Cited By ~ 19

Author(s):

Song Wei ◽

Johannes P. F. G. Helsper ◽

L. J. L. D. Van Griensven

Keyword(s):

Reactive Oxygen Species ◽

Phenolic Compounds ◽

Reactive Oxygen ◽

Human Cells ◽

Oxygen Species ◽

Medicinal Mushroom ◽

Mushroom Extracts

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Bioactivity of Phenolic Compounds Extracted from Strawberry against Formation of Pseudomonas aeruginosa Biofilm

International Journal of Pharmaceutical Quality Assurance ◽

10.25258/ijpqa.10.1.27 ◽

2019 ◽

Vol 10 (01) ◽

Author(s):

Baydaa Hussein ◽

Zainab A. Aldhaher ◽

Shahrazad Najem Abdu-Allah ◽

Adel Hamdan

Keyword(s):

Pseudomonas Aeruginosa ◽

Phenolic Compounds ◽

Biofilm Formation ◽

Opportunistic Infections ◽

Formation Rate ◽

Hydrocarbon Chain ◽

Health Concern ◽

Gas Chromatography Mass Spectrometry ◽

Phenolic Contents

Background: Biofilm is a bacterial way of life prevalent in the world of microbes; in addition to that it is a source of alarm in the field of health concern. Pseudomonas aeruginosa is a pathogenic bacterium responsible for all opportunistic infections such as chronic and severe. Aim of this study: This paper aims to provide an overview of the promotion of isolates to produce a biofilm in vitro under special circumstances, to expose certain antibiotics to produce phenotypic evaluation of biofilm bacteria. Methods and Materials: Three diverse ways were used to inhibited biofilm formation of P.aeruginosa by effect of phenolic compounds extracts from strawberries. Isolates produced biofilm on agar MacConkey under certain circumstances. Results: The results showed that all isolates were resistant to antibiotics except sensitive to azithromycin (AZM, 15μg), and in this study was conducted on three ways to detect the biofilm produced, has been detected by the biofilm like Tissue culture plate (TCP), Tube method (TM), Congo Red Agar (CRA). These methods gave a clear result of these isolates under study. Active compounds were analyzed in both extracts by Gas Chromatography-mass Spectrometry which indicate High molecular weight compound with a long hydrocarbon chain. Conclusion: Phenolic compounds could behave as bioactive material and can be useful to be used in pharmaceutical synthesis. Phenolic contents which found in leaves and fruits extracts of strawberries shows antibacterial activity against all strains tested by the ability to reduce the production of biofilm formation rate.

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Phytochemical composition and antioxidant activity of Malus baccata (L.) Borkh. fruits

Food Science and Applied Biotechnology ◽

10.30721/fsab2020.v3.i1.46 ◽

2020 ◽

Vol 3 (1) ◽

pp. 47

Author(s):

Nadezhda Petkova ◽

Manol Ognyanov ◽

Blaga Inyutin ◽

Petar Zhelev ◽

Panteley Denev

Keyword(s):

Phenolic Compounds ◽

Antioxidant Activities ◽

Ethanol Extract ◽

Titratable Acidity ◽

Total Phenolic ◽

Total Phenolic Compounds ◽

Frap Assay ◽

Phytochemical Composition ◽

Malus Baccata

Crab apple (Malus baccata (L.) Borkh.) was mainly distributed in Europe as an ornamental plant, but the nutritional properties of its edible fruits were not fully revealed. The aim of the current study was to characterize the phytochemical composition of ripen carb apple fruits and to evaluate their nutritional and antioxidant potentials. The fruits were assayed for moisture and ash content, proteins, lipids, carbohydrates, titratable acidity (TA), pH, total phenolic compounds and natural pigments. Among the analyzed carbohydrates cellulose was found in the highest content (6% dw), followed by sugars (sucrose, glucose and fructose) and 1.8 % dw uronic acids. The total chlorophylls and carotenoids contents in their fruits were 6.51 and 4.80 μg/g fw, respectively. Total monomeric anthocyanins were not detected. The highest content of total phenolic compounds (2.67 mg GAE/g fw) was found in 95 % ethanol extract from fruits, while the total flavonoids were relatively low – 0.1 mg QE/g fw. DPPH assay (17.27 mM TE/g fw) and FRAP assay (14.34 mM TE/g fw) demonstrated in vitro antioxidant activities of crabapple. Malus baccata fruits were evaluated as a rich source of dietary fibers and phenolic compounds with significant antioxidant potential that could be used in human nutrition.

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Callus Induction and Plant Regeneration in Rauvolfia Serpentina (L.) Benth Ex. Kurz.

Journal of Natural History Museum ◽

10.3126/jnhm.v24i1.2245 ◽

2009 ◽

Vol 24 ◽

pp. 82-88 ◽

Cited By ~ 1

Author(s):

Saraswoti Aryal ◽

Sanu Devi Joshi

Keyword(s):

Acetic Acid ◽

Callus Induction ◽

Coconut Milk ◽

Ms Medium ◽

Rauvolfia Serpentina ◽

History Museum ◽

Short Period ◽

Murashige Skoog ◽

Callus Tissue Culture

Rauvolfia serpentina (L.) ex. Kurz is an important medicinal plant. Callus induction and regeneration was studied from stem explant of in-vitro grown plant of Rauvolfia serpentina(L.) Benth. ex Kurz (Apocynaceae) on Murashige Skoog (1962) medium supplemented with 1mg/l 2,4-Dichlorophenocy acetic acid (2,4-D) and 1mg/l Kinetin (Kn). Vigorous growth of callus occurs after 4 weeks of culture. Callus was sub-cultured on Murashige and Skoog (MS) medium supplemented with different concentration of 2, 4-D (0.5-3.0 mg/l) and 10% coconut milk. Regeneration of plantlets occurred on MS medium containing 3 mg/1 of 2, 4-D and 10% coconut milk. These plantlets were rooted on MS medium supplemented with 1 mg/l IAA .The regenerated plantlets were able to grow on soil after short period ofacclimatization. Key words: Explant; In-vitro culture; MS medium; 2, 4 Dichlorophenoxy acetic acid; Kinetin; Callus; Tissue culture; Coconut milk. Journal of Natural History Museum Vol. 24, 2009 Page: 82-88

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Shoot Multiplication and Callus Induction of Labisia pumila var. alata as Influenced by Different Plant Growth Regulators Treatments and Its Polyphenolic Activities Compared with the Wild Plant

Molecules ◽

10.3390/molecules26113229 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3229

Author(s):

Mat Yunus Najhah ◽

Hawa Z. E. Jaafar ◽

Jaafar Juju Nakasha ◽

Mansor Hakiman

Keyword(s):

Callus Induction ◽

Antioxidant Activities ◽

Shoot Multiplication ◽

Wild Plants ◽

Wild Plant ◽

Total Phenolic ◽

Nodal Segment ◽

Ms Medium ◽

In Vitro Plantlets

This study aims to investigate whether the in vitro-cultured L. pumila var. alata has higher antioxidant activity than its wild plant. An 8-week-old L. pumila var. alata nodal segment and leaf explants were cultured onto Murashige and Skoog (MS) medium supplemented with various cytokinins (zeatin, kinetin, and 6-benzylaminopurine (BAP)) for shoot multiplication and auxins (2,4-dichlorophenoxyacetic acid (2,4-D) and picloram) for callus induction, respectively. The results showed that 2 mg/L zeatin produced the optimal results for shoot and leaf development, and 0.5 mg/L 2,4-D produced the highest callus induction results (60%). After this, 0.5 mg/L 2,4-D was combined with 0.25 mg/L cytokinins and supplemented to the MS medium. The optimal results for callus induction (100%) with yellowish to greenish and compact texture were obtained using 0.5 mg/L 2,4-D combined with 0.25 mg/L zeatin. Leaves obtained from in vitro plantlets and wild plants as well as callus were extracted and analyzed for their antioxidant activities (DPPH and FRAP methods) and polyphenolic properties (total flavonoid and total phenolic content). When compared with leaf extracts of in vitro plantlets and wild plants of L. pumila var. alata, the callus extract displayed significantly higher antioxidant activities and total phenolic and flavonoid content. Hence, callus culture potentially can be adapted for antioxidant and polyphenolic production to satisfy pharmaceutical and nutraceutical needs while conserving wild L. pumila var. alata.

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